It can be anything! An apex, subdomain, or even a URL.

Results forstaging.localbazaar.app

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-03-23T15:20:30.304	2020-03-23T14:20:30	2020-06-21T14:20:30	www.subzimandi.net	staging.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-03-23T15:20:30.124	2020-03-23T14:20:30	2020-06-21T14:20:30	www.subzimandi.net	staging.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-21T20:03:12.127	2020-01-21T19:03:11	2020-04-20T19:03:11	beta.ewhallet.com	staging.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-21T20:03:11.836	2020-01-21T19:03:11	2020-04-20T19:03:11	beta.ewhallet.com	staging.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-19T17:01:20.139	2020-01-19T16:01:19	2020-04-18T16:01:19	staging.localbazaar.app	staging.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-19T17:01:19.861	2020-01-19T16:01:19	2020-04-18T16:01:19	staging.localbazaar.app	staging.localbazaar.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3